Related Experiment Video
Updated: Oct 2, 2026

The Innovation Arena: A Method for Comparing Innovative Problem-Solving Across Groups
Published on: May 13, 2022
The two by four appliance: a versatile appliance
1Chesterfield Royal Hospital.
Abstract:
The 2 x 4 appliance comprises bonds on the maxillary incisors, bands on the first permanent maxillary molars and a continuous archwire. The appliance is used in the early mixed dentition for treatment of both anterior crossbites and alignment of ectopic incisors. Four cases using this appliance are presented. This appliance offers many advantages over alternative techniques as it provides complete control of anterior tooth position, is extremely well tolerated, requires no adjustment by the patient and allows accurate and rapid positioning of the teeth.
Related Concept Videos
Refrigerators and Heat Pumps
A household refrigerator removes heat from the...
Three-Phase Circuits
Brick Sizes
Modular bricks are the most common type and are sized to include the mortar joint, which is essential for...
Brick Cutting Techniques
Cut bricks are categorized by size. Bricks cut to half their original length are called half-bats, while those cut to three-fourths their length are known as three-fourth bats.
Special types of cut...
Wood Products
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
Wood Panel Products

